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1// Copyright 2022 Google LLC
2//
3// This source code is licensed under the BSD-style license found in the
4// LICENSE file in the root directory of this source tree.
5
6$assert NR % 8 == 0
7$ABC = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
8#include <assert.h>
9
10#include <immintrin.h>
11
12#include <xnnpack/igemm.h>
13#include <xnnpack/intrinsics-polyfill.h>
14
15
16void xnn_f16_igemm_minmax_ukernel_${MR}x${NR}__avx2_broadcast(
17    size_t mr,
18    size_t nc,
19    size_t kc,
20    size_t ks,
21    const void**restrict a,
22    const void*restrict w,
23    void*restrict c,
24    size_t cm_stride,
25    size_t cn_stride,
26    size_t a_offset,
27    const void* zero,
28    const union xnn_f16_scaleminmax_params params[restrict XNN_MIN_ELEMENTS(1)])
29{
30  assert(mr != 0);
31  assert(mr <= ${MR});
32  assert(nc != 0);
33  assert(kc != 0);
34  assert(kc % sizeof(uint16_t) == 0);
35  assert(ks != 0);
36  assert(ks % (${MR} * sizeof(void*)) == 0);
37  assert(a_offset % sizeof(uint16_t) == 0);
38  assert(a != NULL);
39  assert(w != NULL);
40  assert(c != NULL);
41
42  uint16_t* c0 = c;
43  $for M in range(1, MR):
44    uint16_t* c${M} = (uint16_t*) ((uintptr_t) c${M-1} + cm_stride);
45    $if M % 2 == 0:
46      if XNN_UNPREDICTABLE(mr <= ${M}) {
47        c${M} = c${M-1};
48      }
49    $elif M + 1 == MR:
50      if XNN_UNPREDICTABLE(mr != ${M+1}) {
51        c${M} = c${M-1};
52      }
53    $else:
54      if XNN_UNPREDICTABLE(mr < ${M+1}) {
55        c${M} = c${M-1};
56      }
57
58  do {
59    __m256 vacc0x${ABC[0:8]} = _mm256_cvtph_ps(_mm_load_si128((const __m128i*) w));
60    $for N in range(8, NR, 8):
61      __m256 vacc0x${ABC[N:N+8]} = _mm256_cvtph_ps(_mm_load_si128((const __m128i*) ((const uint16_t*) w + ${N})));
62    $for M in range(1, MR):
63      $for N in range(0, NR, 8):
64        __m256 vacc${M}x${ABC[N:N+8]} = vacc0x${ABC[N:N+8]};
65    w = (const uint16_t*) w + ${NR};
66
67    size_t p = ks;
68    do {
69      $for M in range(MR):
70        const uint16_t* restrict a${M} = (const uint16_t*) a[${M}];
71        assert(a${M} != NULL);
72        if XNN_UNPREDICTABLE(a${M} != zero) {
73          a${M} = (const uint16_t*) ((uintptr_t) a${M} + a_offset);
74        }
75      a += ${MR};
76
77      size_t k = kc;
78      do {
79        const __m256 vb${ABC[0:8]} = _mm256_cvtph_ps(_mm_load_si128((const __m128i*) w));
80        $for N in range(8, NR, 8):
81          const __m256 vb${ABC[N:N+8]} = _mm256_cvtph_ps(_mm_load_si128((const __m128i*) ((const uint16_t*) w + ${N})));
82        w = (const uint16_t*) w + ${NR};
83
84        $for M in range(MR):
85          const __m256 va${M} = _mm256_cvtph_ps(_mm_set1_epi16((short) *a${M}));
86          a${M} += 1;
87
88        $for M in range(MR):
89          $for N in range(0, NR, 8):
90            vacc${M}x${ABC[N:N+8]} = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_fmadd_ps(va${M}, vb${ABC[N:N+8]}, vacc${M}x${ABC[N:N+8]}), _MM_FROUND_NO_EXC));
91
92        k -= sizeof(uint16_t);
93      } while (k != 0);
94      p -= ${MR} * sizeof(void*);
95    } while (p != 0);
96
97    const __m256 vscale = _mm256_load_ps(params->avx.scale);
98    $for N in range(0, NR, 8):
99      $for M in range(MR):
100        vacc${M}x${ABC[N:N+8]} = _mm256_cvtph_ps(_mm256_cvtps_ph(_mm256_mul_ps(vacc${M}x${ABC[N:N+8]}, vscale), _MM_FROUND_NO_EXC));
101
102    const __m256 vmin = _mm256_load_ps(params->avx.min);
103    $for N in range(0, NR, 8):
104      $for M in range(MR):
105        vacc${M}x${ABC[N:N+8]} = _mm256_max_ps(vacc${M}x${ABC[N:N+8]}, vmin);
106
107    const __m256 vmax = _mm256_load_ps(params->avx.max);
108    $for N in range(0, NR, 8):
109      $for M in range(MR):
110        vacc${M}x${ABC[N:N+8]} = _mm256_min_ps(vacc${M}x${ABC[N:N+8]}, vmax);
111
112    if XNN_LIKELY(nc >= ${NR}) {
113      $for M in reversed(range(MR)):
114        _mm_storeu_si128((__m128i*) c${M}, _mm256_cvtps_ph(vacc${M}x${ABC[0:8]}, _MM_FROUND_NO_EXC));
115        $for N in range(8, NR, 8):
116          _mm_storeu_si128((__m128i*) (c${M} + ${N}), _mm256_cvtps_ph(vacc${M}x${ABC[N:N+8]}, _MM_FROUND_NO_EXC));
117        c${M} = (uint16_t*) ((uintptr_t) c${M} + cn_stride);
118
119      a = (const void**restrict) ((uintptr_t) a - ks);
120      nc -= ${NR};
121    } else {
122      $for LOG2N in reversed(range(NR.bit_length())):
123        $if LOG2N == 3:
124          $for M in reversed(range(MR)):
125            __m128i vh${M}x${ABC[0:8]} = _mm256_cvtps_ph(vacc${M}x${ABC[0:8]}, _MM_FROUND_NO_EXC);
126        $if NR != 1 << LOG2N:
127          if (nc & ${1 << LOG2N}) {
128            $if LOG2N >= 4:
129              $for M in reversed(range(MR)):
130                _mm_storeu_si128((__m128i*) c${M}, _mm256_cvtps_ph(vacc${M}x${ABC[0:8]}, _MM_FROUND_NO_EXC));
131                $for N in range(8, 1 << LOG2N, 8):
132                  _mm_storeu_si128((__m128i*) (c${M} + ${N}), _mm256_cvtps_ph(vacc${M}x${ABC[N:N+8]}, _MM_FROUND_NO_EXC));
133
134              $for M in reversed(range(MR)):
135                $for N in range(0, 1 << (LOG2N - 1), 8):
136                  vacc${M}x${ABC[N:N+8]} = vacc${M}x${ABC[N + (1 << LOG2N):N + (1 << LOG2N)+8]};
137
138              $for M in reversed(range(MR)):
139                c${M} += ${1 << LOG2N};
140            $elif LOG2N == 3:
141              $for M in reversed(range(MR)):
142                _mm_storeu_si128((__m128i*) c${M}, vh${M}x${ABC[0:8]});
143
144              $for M in reversed(range(MR)):
145                vh${M}x${ABC[0:8]} = _mm256_cvtps_ph(vacc${M}x${ABC[8:16]}, _MM_FROUND_NO_EXC);
146
147              $for M in reversed(range(MR)):
148                c${M} += ${1 << LOG2N};
149            $elif LOG2N == 2:
150              $for M in reversed(range(MR)):
151                _mm_storel_epi64((__m128i*) c${M}, vh${M}x${ABC[0:8]});
152
153              $for M in reversed(range(MR)):
154                vh${M}x${ABC[0:8]} = _mm_unpackhi_epi64(vh${M}x${ABC[0:8]}, vh${M}x${ABC[0:8]});
155
156              $for M in reversed(range(MR)):
157                c${M} += 4;
158            $elif LOG2N == 1:
159              $for M in reversed(range(MR)):
160                _mm_storeu_si32(c${M}, vh${M}x${ABC[0:8]});
161
162              $for M in reversed(range(MR)):
163                vh${M}x${ABC[0:8]} = _mm_srli_epi64(vh${M}x${ABC[0:8]}, 32);
164
165              $for M in reversed(range(MR)):
166                c${M} += 2;
167            $elif LOG2N == 0:
168              $for M in reversed(range(MR)):
169                *c${M} = _mm_extract_epi16(vh${M}x${ABC[0:8]}, 0);
170          }
171
172      nc = 0;
173    }
174  } while (nc != 0);
175}
176